I believe that there are several ways to verify the legitimacy of a project team and some are listed below:
1. Try to convince the team to conduct an AMA via online video conference and ask questions including technical ones that
are relevant to the project (If the team don't know what they are talking about especially with development aspects, then
we could consider it as a red flag)
2. Research and verify their social media profiles especially on Linkedin and Github profiles - (for core developers) and assess
if they are really who they say they are and try to see their previous activity on projects they have worked on.
3. Observe if they have good community management and if they are regularly interacting with the community via social media
channels and see if they are always ready to assist on any concerns of the community. (most legit projects often responds
to the community's queries mostly in a daily basis and if you didn't get any response to one of your queries, then beware of
this project).
4. Observe if they are posting any documentation or pictures of team activities (e.g. attending a crypto conference, symposiums)
If none of these has been published, chances are the project is a scam.
The thing you can do is follow projects and test their execution, for example, I have been following a project called Lympo and not only they did everything they say they will, but there is something big coming up. There was a leak like here:
http://boards.4channel.org/biz/thread/15515880And there are some serious rumors that something big is coming